Lock



Oct. 15, 1940.

w.,A R'. scHLAGE Filed July 14, 19,37

LOCK

2 Sheets-Shui l INV NTOR. wia/m71?.

ATTORNEY Oct. l5, 1940. w. R. scHLAGE LOCK Filed July 14, 1931' 2 Sheets-Sheet 2 ATTORNEY.v

Patented Cct. 15, 1940 LOCK Walter R. schlage, San Francisco, Calif., asslgnor to Schlage Lock Company, San Francisco, Calif., a corporation o! California.

Application July 14, 1937, Serial No. 153,567

14 Claims.

'Ihis invention relates to door locks of the type in which the outer knob and spindle may be dogged or rendered inoperative by depression or rotation of a button mounted in the inner knob, and especially to means for rendering the dogging mechanism inoperative when the door is open.

The object of the present invention is to generally improve and simplify the construction and operation of locks of the character described; to provide a lock in which the outer knob and the spindle to which the knob is secured may be dogged against rotation by depression or rotation of a button mounted in the inner knob; to provide means whereby said dogging mechanism is normally rendered inoperative when the door is open; to provide a dogging mechanism which is operative only when the door is closed; to provide a dogging mechanism which may be released by key-actuated means in the outer knob; and further, to provide a dogging mechanism which is not only capable of dogging the outer knob and spindle against operation, but which is also capable of clogging the latch bolt against depression when the door is closed.

The lock is shown by way of illustration in the accompanying drawings, in which- Fig. 1 is a horizontal longitudinal section of the lock showing the lock mounted in the hollow stile of a metal door;

Fig. 2 is a vertical longitudinal section taken on line II-II of Fig. 1;

Fig. 3 is a similar section showing the auxiliary bolt and sliding plate to which it is attached removed, so as to show the shape of the sliding plate to which the latch bolt proper is secured;

Fig. 4 is similar to Fig. 2, showing both the auxiliary latch bolt and the main latch bolt, together with their sliding plates, removed, so as to show the shape of the sliding plate which carries the spindle-dogging member;

Fig. 5 is a perspective view of the key mechanism mounted in the outer knob;

Fig. 6 is a perspective view of the outer end of the button bar;

Fig. 'I is a cross section taken on line VII- VII oi Fig. 1;

Fig. 8 is a perspective view of the spindle shown in Fig. 1;

Fig. 9 is a perspective view of the lock housing;

Fig. 10 is a perspective view of the key-actuated mechanism mounted in the outer knob of the double spindle lock shown in Fig. 11;

Fig. 11 is a section similar to Fig. 1, showing a double spindle actuated lock;

Fig. 12 is a perspective view of the sliding plate carrying the spindle-dogging member, said plate being used in the structure shown in both Figs. 1 and 11;

Fig. 13 is a perspective view of the inner spindle used in the structure shown in Fig. 11;

Fig. 14 is a longitudinal vertical section taken on line XIV-XIV of Fig. 11.

The lock shown in the accompanying drawings is particularly intended for use in metal doors having a hollow stile such as indicated by the 1o numerals 2 and 3 (see Figs. 1 and 1l). The lock mechanism employed is supported by an elongated rectangularly-shaped housing generally indicated at A (see Fig. 9) and by a pair of escutcheon plates B and C (see Figs. v1 and 11). The l5 housing proper consists of a front plate in which is formed an opening 5 which supports and guides the main latch bolt and the auxiliary latch bolt hereinafter to be described. Forming rearwardly-extending parts of the plate 4 are plates 20 6 and 1 which are connected at their inner ends to a rear plate 8. Welded, or otherwise secured, to the plates 6 and 'I are side plates 9 and I0, and formed therein are screw-threaded openings I I and I2, which are formed for the reception of the escutcheon plates B and C, as will hereinafter be described. Formed in the plates 6 and l, adjacent the rear ends thereof, are slots 6a and 1a, and slidably mounted in said slots are three plates generally indicated at I2, I3 and I4. The 30 plate I2 (see Figs. 1 and 2) carries on its forward end an auxiliary latch bolt I5. The plate is widened out vertically, rearwardly of the latch bolt I5, to flt between the plates 6 and 1, and the extreme rear end is provided With a pair of lugs I1 35 and I8 which extend into and are guided by the slots 6a and la. 'Ihe rearmost portion of the plate is provided with a lug I9, and a spring 20 is interposed between said lug and the lug in the rear plate 8, said spring serving the function of normally maintaining the plate I2 in its foremost position, shown in Figs. A1 and 2. A large opening 2l is formed in the plate. The forward end thereof is rounded, while the rear end of the opening is shaped to form a pair of shoulders 22, which are adapted to be engaged by the rollback portion 23 of a spindle 24 (see Figs. 1 and 8). Between the shoulders 22 is a recess 25, at the inner end of which is formed a notch 26, said notch serving the function of straddling a bar 2l, which 5o will hereinafter be referred to as the button bar, as it is attached to a button 28 disposed within the inner knob indicated at 29.

The second plate, indicated at I3, is similar in shape to the plate I2, except that its forward end actuated is slightlyY wider. The main latch bolt of the lock, indicated at 30, is secured thereto. This plate, like the plate I2, is provided with lugs I1a and I8a, which extend into the slots 6a and 1a, and a lug isformed on the rear end of the plate, as shown at ISa, to guide and support a spring 28a similar to the spring 20, the spring 20a serving the function of maintaining the plate I3 in its extreme forward position, as shown in Fig. 3. A large opening 2Ia is formed in the plate I3, and shoulders 22a are formed at the rear of the opening, to be engaged by the rollback section 23 of the spindle, in the same manner as the plate I2.

In place of a pair of recesses 25 and 26 as shown in the plate I2, a rounded opening 3| is formed between the shoulders 212a, and forward thereof are a pair of lugs 32, the function of which will hereinafter be described.

The thirdplate, indicated at I4, does not extend through the opening 5 in the front of the lock housing, but is supported by a screw 33 secured in the plate I3. The forward end of the plate I4 is slotted as shown at 34 to have a limited sliding movement with relation to the plate I3, and a large opening is formed in the plate, as shown at 2lb. Shoulders 22b are formed at the rear of the opening, and a recess 35 is formed between the shoulders. Rearwardly of the recess is an outwardly bent lug or dog 36 which is adapted to enter a recess 36a formed in the spindle 24, for the purpose of dogging said spindle against rotation, as will hereinafter bedescribed. The rear end .of the plate I4 is also pro-vv L vided with a lug I9b, and a spring 20b cooperates` therewith and with the rear plate 8, in the same y manner as the springs hereinb'efore described.

Plate I`4`is also guided inthe slots 6a and 1a by means of projecting lugs I1b and I8b.

The front edge of the vhollow metal -stile has an opening formed therein (see Figs. 1 and 2)- .which is sumciently large to permit the loci:V

housingf'gn'erally indicated at A, tobe insertedil This housing has a width equal to thespace between the inner and outer faces 2: and 3 of the' hollowmetal stile, and'thus forms a spacer between them which reenforces and strengthens the stile. The front end of the housing is supported by the opening formed in the edge ofthe stile, and the rear end is supported by the escutcheon plates B and C which have threaded extensions which screw into the' threaded'openings II of the plates 8 and I0. The spindle 24 is also supported by the escutcheon plates B and C, and is normallyrotatable therein. The spindle carries an inner knob 29"and an outer knob 28a, said outer `knob being provided with a keyscribed.-

- .'I'i'iefbutton-actuated bar previously referred to, v.and-indicated at 21, is secured at its inner end to a--button'28. lThis 4button is rotatable in the innerknob and spindle, but will ordinarily assume one *ofV three positions determined by a ball detent 4I, jas said detent `will enter one or .an--v other of 'a series of notches indicated at 42, 43,

and 44 (see Fig. '1). A turn piece 28h is mounted.

on thek face ofthe button, so that it may be grasped and rotated, and` when the button, to-

gether with its detent,assumes the position shown in Figs.- r1 and 7, the bar 21 secured thereto will assume the horizontal position shown in Figs. l, 2, 3 and 4. On the other hand, if the Abutton is rotated by means of the turn piece to engage either ofthe notches 42 or 44. the bar 21 will assume a vertical position.

I and knob against rotation n the plate I2. On the other hand,

closed, the main latch bolt mechanism 4I) .hereinafter to jde- A' jing provided by the pressure 'Ihe key mechanism indicated at 48 may be an ordinary type of pin-tumbler lock. It is provided with a core which is rotated by means of a key. The inner end of the core extends through the housing of the key-actuated lock, as

shown at 45, and it carries a cup-shaped sleeve 48 which is secured to the core by a pin 41. The

cup-shaped sleeve is best shown in Fig. 5. The end of the sleeve is provided with anv opening such as shown at 48. 'Ihe button-actuated bar extends through the opening and secured on the inner end of the bar is a disc 48 (see Figs. 1 and 6) which prevents endwise separation of the bar 21 and the cup-shaped sleeve 48. The opening 48 of the cup-shaped sleeve permits independent rotation of the bar 21 by means of the button, to assume either a vertical or a horizontal position, but it also permits the bar to be rotated by means of the key mechanism, as will hereinafter be described.

'I'he broad idea of :logging the outer spindle by means of a dog such as shown at 38 which is actuated by a bar 21 and a button 28 is old, as it has been disclosed in other co-pending applications flled by me, but the provision of means for preventing or dogging the button 28 and the bar 21 against operation when the door is open, and for rendering it operative only when the door is closed, is new, and forms the subject matter of this application.

By referring to Figs. 1 to 4, inclusive, let it be assumed that the door in which :the lock is assume the projected position shown in Fig. 1, and if they do so, the plate I2 will assume the position shown inFig. 2, and whenit assumes this position, it will dog the button 28 and the bar 21 against rotation, as the bar is straddled by the notch recess portion 26 at the inner end of if the door is y will be'projected, but the-auxiliary latch bolt will bevdepressed, and whenthe auxiliary latch'bolt is depressed the plate. I2 will be forced rearwardly, thus-releasing the bar 21 and permittingit tube-rotated. Thus itis impossibieto dog the knob against rotation when the door is open, but it is possible to do so when the door is closed, because the bar `21 .is released when the door is closed, thus making it possible to rotate it to a A position-,where-the detent 4I will engage one or another of the recesses indicated at 42 orv 44, that is, to a position where the bar 21 will be swung `from a horizontal to a vertical position. When it is rotated from a horizontal' to a vertical position it is moved out of engagement with the rear wail of the recess 35 of the plate I4, thus permitting this plate to move forwardly the distance of the slot 3,4, said forward movement beof the spring 20h, and when it moves forwardly, the dog 36 will enter the recess 36a in the spindle and thereby dog itltogether with the outer knob, against rotation.A To open the door from the inside, -it is only necessary to rotate. the button until the bar assumes'a horizontal position. In doing so, the edge of the bar engages the rear wall of thev recess 35 vformed in the plate I4, and thereby forces the plate I4 rearwardly a sufiicient distance to bring the dog out of the notch formed in the spindle, thus undogging the spindle and outer knob. Inthe closed position of the door, it may be opened by the introduction of a key. When the key is inserted and the core is rotated, one

spindle and the outer t or another of the shoulders formed in the opening 48 of the cup-shaped sleeve 46 will engage the bar and rotate it back to horizontal position. In doing so, it undogs the spindle and thereby permits the door to be opened by rotation of the outer knob. The bar 21 is normally dogged or held against rotation when the door is open, by the recess 26 formed in the plate I2, but when the bar is free for rotation, as when the door is closed, it serves to either dog or undog the spindle. In addition thereto, it also serves to dog the plate I3 and the main latch bolt carried thereby against depression when the door is closed, that is, depression by a jimmy or like implement.

By referring to Fig. 3, just assume that the bar 21 is assuming a vertical position. T'hat is, of course, the positionV assumed when the spindle is dogged. In this position it is impossible to depress the main latch bolt 30, as the lugs 32 formed on the plate I3 will engage the bar, thus preventing rearward movement of the plate I3 and the main latch bolt carried thereby.

In Fig. 1, a lock structure is shown employing a single spindle. In Fig. 11, a lock structure is shown employing two spindles, an inner spindle 50 to which the inner knob is secured, and an outer spindle 5I to which the outer knob is secured. The outer spindle 5I is identical in construction to the spindle shown in Figs. 1 and 8 that is, it has a rollback portion 23 and a notch 36a. The inner spindle 50 is constructed as shown in Fig. 13. The structure shown in Fig. 11 differs from the structure shown in Fig. 1 in that it employs a depressible button in place of a rotatable button. This depressible button is shown at 52. It is secured to a bar 21a which may be rotated by means of a key mechanism mounted in the outer knob, said key mechanism being indicated by the numeral 53. This key mechanism is provided with the usual core which is adapted to be rotated by a key. The inner end of the core is shown at 54, and it has secured to it a cupshaped sleeve which is identical to the sleeve shown at 4Il in Fig. 5, with the exception that in place of having an opening such as shown at 48, it isprovided with a rectangular-shaped opening such as shown at 48a. This cup-shaped sleeve is pinned to the inner end of the core, and it supports the adjacent end of the bar 21a. This bar has a notch formed therein as shown at 21h, and this notch is normally occupied by the inner end of the plate I2a, which is shaped as shown. at I2b (see Fig. 14). The other plates I3a and I4a are identical in shape to the plates I3 and I4, and function in the identical manner.

The operation of the structure shown in Fig. 11 will be. as follows: When the door is open, the outer spindle and knob can not be dogged or rendered inoperative, as the push button 52 can not be depressed due to the rear end I2b of the plate I2a entering the notch 21h. On the other hand, if the door is closed, the auxiliary latch, together with the plate I2a, will be depressed, and when that is the case, the button 52 may be de.. pressed or pushed inwardly, and when it is depressed the notch 21h will register with the inner end of the plate I 4a. This will then be free to enter the notch 21b, and the dog 36h carried by the plate I4a will thus enter the notch 35a in the outer spindle and dog it, together with the outer knob, against rotation. During depression of the button 52 or when bar 21a is moved inwardly, the inner end of the plate I2u. will not enter notch 21h, as the lugs I1 on said plate which ride in the slot 1a of housing 1 will engage the forward end of said slots and thereby prevent the inner end of the plate I2a from entering notch 2lb. 'I'he door may, however, be opened from the outside, when it is closed and the outer knob and spindle dogged, by the use of a key, as the insertion of a key permits rotation of the core, and as the cup-shaped sleeve 55 is secured thereto, said sleeve will rotate in unison with the core and it will at the same time rotate the bar 21a a half revolution, thus swinging the bar to a position where the notch 21h turns towards the latch bolt, while the opposite edge of the bar engages the inner end of the plate I4a and forces it inwardly a sufllcient distance to bring the dog 36h out of engagement with the outer spindle, thus undogging the spindle and permitting the door to be opened by rotation of the outer knob. The bar 21a is thus both movable longitudinally within the spindles and is also rotatable therein, and to thatextent differs from the bar shown at 21 in Fig. 1.

While certain features of this invention have been more or less specifically described and illustrated, I nevertheless wish it undertsood that changes maybe resorted to Within the scope 0f the appended claims, and that the materials and finish of the several parts employed may be such as the experience and judgment of the manufacturer may dictate, or varying conditions or uses demand.

Having thusi described and illustrated my invention, what I claim and desire to secure by Letters Patent is as follows:

1. In a door lock, a latch bolt, an auxiliary latch bolt, a pair of knobs for actuating the latch bolt and the auxiliary latch bolt, a dog, dogactuating means extending through the knobs for dogging the knobs against operation, and means controlled by the auxiliary bolt for rendering said dog-actuating means inoperative when the auxiliary bolt is projected.

2. In a door lock, a latch bolt, an auxiliary latch bolt, a spindle, a rollback member actuated by the spindle to retract both bolts, means for dogging the spindle against operation, means extending through the spindle for actuating the dogging means, and means controlled by projection or depression of the auxiliary bolt for rendering suchmeans operative or inoperative.

3. In a door lock,.a latch bolt, a spindle whereby the latch bolt is actuated, a bar extending through the spindle, said bar being adapted to assume two positions, one position permitting depression of the latch bolt, means engageable with the bar when it assumes the second position to dog the latch bolt against depression, means nor-4 mally preventing positioning of the bar to dog the latch bolt whenthe door is open and the latch bolt is extended, and key-actuated means for changing the position of the bar to undog the latch bolt when the door is closed.

4. In a door lock, a latch bolt, an auxiliary latch bolt, a spindle for actuating both latch bolts, a dog for dogging the spindle against operation, an actuating member extending through the spindle to control the position of the dog, and means controlled by the auxiliary latch bolt for rendering the actuating member operative or inoperative.

5. In a door lock, a latch bolt, an auxiliary latch bolt, a spindle for actuating both latch bolts, a. dog for dogging the spindle against operation, an actuating member extending through the spindle to control the position of the dog,

means controlled by the auxiliary latch bolt for rendering the actuating member operative or inoperative, and key-actuated means for controlling the actuating member.

6. In the door lock a latch bolt, an auxiliary latch bolt, a spindle for actuating both latch bolts, means 'for dogging the spindle against operation, means extending through the spindle for controlling the clogging means, and means controlled by projection or depression of the auxiliary latch bolt for rendering such means operative or inoperative.

7. In a door lock, a latch bolt, a spindle whereby the latch bolt is actuated, a dog engageable with the spindle to dog it against operation, aA

movable bar extending through the spindle, manual means for imparting movement to the bar, said movement controlling the'position of the dog to dog or undog the spindle, a depresslble member projecting from the edge of the door, and means controlled by said member for dogging said bar against movement or forreleas ing said bar.

8. In a lock, a latch bolt mounted for reciprocal movement, a retractor plate connected with the latch bolt, a pair of spaced lugs on the retractor plate, a rotatable bar extending through the retractor plate rearwardly of the spaced lugs, said bar in one position permitting the lugs to pass the bar when reciprocal movement is transmitted to the retractor plate, said bar when turned to a second position engaging the lugs and preventing reciprocal movement of the retractor plate and connected latch bolt, a depressible member projecting from the edge of the door land means controlled by said depressible membendogl ging said bar against movement or for releasing y tractionkareleasable. dog for dogging the spindle said bar.

9. In a door lock, a latch bolt, an auxiliary latch bolt, a spindle, a rollback member actuated by the spindle to retract both bolts, a d og` for dogglng the spindle against operation, a bar extending through the spindle and-controlling the position of the dos, means for rotating the bar to move the dog out of dogging engagement with the spindle, other means for returning the dog to clogging position, and means controlled by projection or depression of the auxiliary bolt for rendering the bar and dogging means operative or inoperative. t

10. In a door lock, a latch bolt, a spindle whereby the latch bolt is actuated, a bar extending through the spindle, said bar adapted to assume two positions, one position permitting depression of the latch bolt and the second position to dog the latch bolt against depression, an' auxiliary latch bolt adapted to assume either an extended or a depressed position, and means actuated by the auxiliary latch bolt when in extended position to prevent positioning of the bar to dog the latch bolt.

11. In a door lock.- a latch bolt, a. spindle whereby the latch bolt is actuated, a bar extending through the spindle, said bar adapted to assume two positions, one position permitting depression of the latch bolt andthe second position to dog the latch bolt against depression. a spring pressed dog normally urged to dog the spindle against rotation, said dog being controlled by the bar to dog or undog the spindle, and means normally preventing positioning of the bar to dog the latch bolt and spindle when the door is open.

12. In a door lock, a latch bolt, a spindle whereby the latch bolt is actuated, a bar extending through the spindle, said bar adaptedto assume -two-..psti9n sv, one position permitting depression of the latcli`boltand the second position to dog the latchA bolt against depression, la spring pressed dog normally urged to dog the spindleagainst rotation, said dog being controlled'by thej'bary to dog or. undog the spindle.

means normally preventing positioning of the bar to dog the latch bolt and spindle when the door is open, and key actuated means forchanging the position of the bar to undog the spindle and latch bolt when the door is clo 13. In aiock, a latch boit mounted for recul!y rocal movement, a rotatable spindle for retracting the latch bolt, -a bar operable within-the aspindlejfor retaining the latch boltagainst reagain'stfrtation, said dogbeing controllablehby .the bar, and depressible means projecting rroi the edge of the door' forrendering the bar oper-v able or inoperable to control the dog.`

145m a lock, a spring projected latch bolt, a

able or operable to control thedog.

rendering the manually operable meansl inopei'lf;

l WALTeaBSQHLAGE 

